83785411509 has 8 divisors (see below), whose sum is σ = 115566084960. Its totient is φ = 53930839536.

The previous prime is 83785411453. The next prime is 83785411529. The reversal of 83785411509 is 90511458738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83785411509 - 2⁹ = 83785410997 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83785411529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481525267 + ... + 481525440.

It is an arithmetic number, because the mean of its divisors is an integer number (14445760620).

Almost surely, 2^83785411509 is an apocalyptic number.

It is an amenable number.

83785411509 is a deficient number, since it is larger than the sum of its proper divisors (31780673451).

83785411509 is a wasteful number, since it uses less digits than its factorization.

83785411509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963050739.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 83785411509 in words is "eighty-three billion, seven hundred eighty-five million, four hundred eleven thousand, five hundred nine".